Hi am new to the forum and need some help with what you might think is a really weird setup i am trying to use a CCTV board camera with a 1/3 Sony ccd sensor to look down a rifle scope and see what the scope sees my problem is that the cross hairs are out of focus i am using a 12mm lens at the moment and am wondering if anyone can suggest an alternative to this the distance from the camera to the cross hair is only about ten inch